Home / 769,112.80-1,152,632.40-515,672.80

Finding the Fourth Proportional to 769,112.80, 1,152,632.40 and 515,672.80

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Solution

The fourth proportional to 769,112.80, 1,152,632.40 and 515,672.80 is: 772,814.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,112.80 : 1,152,632.40 = 515,672.80 : x
  2. Step 2: Convert to fraction form
    769,112.80/1,152,632.40 = 515,672.80/x
  3. Step 3: Cross multiply
    769,112.80x = 1,152,632.40 × 515,672.80
  4. Step 4: Simplify right side
    769,112.80x = 594,381,177,078.72
  5. Step 5: Solve for x
    x = 594,381,177,078.72/769,112.80
  6. Step 6: Final answer
    x = 772,814.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.